Top 3 reasons to get CGDI Prog MB:1.Support fastest Benz Car key add: collection time 1'50s, password calculation time 40s, 99% get password for one time calculator, it is the fastest key programming tool to calculate the password at present.2.Support MB all key lost: support models including 211,209,204,207,212,166,246,197,172,164 +, 2163.CGDI Prog MB can calculate the password twice free each day.